head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is optimization, and it is a single point.

Optimization · Light / Casual
A narrative horror-investigation game where uncovering the mystery outweighs any mechanical challenge.

Optimization · Practiced Mastery
An atmospheric mood piece with light puzzles, testing patience more than skill.
Call of Cthulhu leans Optimization (Light / Casual); Superbrothers: Sword & Sworcery EP leans Optimization (Practiced Mastery).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Call of Cthulhu
light stealth timing, mostly minor
Superbrothers: Sword & Sworcery EP
Simple timed parries are the only dexterity ask
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Call of Cthulhu
no opponents, narrative investigation
Superbrothers: Sword & Sworcery EP
No opponent - a mood piece, not a contest
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Call of Cthulhu
skill checks add randomness
Superbrothers: Sword & Sworcery EP
Moon-phase secrets are hidden until discovered
Superbrothers: Sword & Sworcery EP leans a little harder on optimization, though the gap is small.
Call of Cthulhu
stat allocation lightly solvable
Superbrothers: Sword & Sworcery EP
Light environmental puzzles with gentle solutions
A matching score does not mean a matching test. Two games can both sit at 10 on execution and demand completely different things of you - which is why the reasoning above matters more than the number beside it.